Hydraulic-motor pump.



PATENTED JULY 5, 1904.

I. H. SPENCER.

HYDRAULIC MOTOR PUMP.

APPLICATION FILED AUG. sa. 1903.

2 SHEETS-SHEBT `1.

PATENTED JULY 5*, 1904.

I. H. SPENCER.

HYDRAULIC MOTOR PUMP.

APPLICATION FILED AUG. 22, 1903.

2 SHEETS-SHEET 2,

N0 MODEL.

/ IIIIIIIIIII" No. 764,156. p Patented July 5, 1904.

UNITED STATES PATENT EEicE..

IRA H. SPENCER, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE ORGAN POVERCOMPANY, INCORPORATED, OF HARTFORD, CONNECTICUT, A CORPORATION OFCONNECTICUT.

HYDRAULIC-MOTOR PUMP.

SPECIFICATION forming part of Letters I'atent No. 764,156, dated July 5,1904.

Application filed August 22, 1903. Serial No. 170,391. (No model.)

T all' 107mm/ "my COW/GWW The pump-cylinder 1 is a section of a tube Beit known that I, IRA H. SPENCER, a citiheld between the base 2 and thepump-valve 50 Zen of the United States, residing at Hartford, case 3,and the motor-cylinder 4 is a section in the county of Hartford andState of Conof a tube of the same diameter held between 5 necticut, haveinvented certain new and useful the pump-valve case and the motor-valvehead Improvements in Hydraulic-Motor Pumps, of 5. Bolts 6 extend fromflanges projecting which the following is a specification. from thevalve-head to threaded sockets in 5 5 This invention relatesto ahydraulic-motor the base for holding these parts together. pump whichhas a primary valve that is ac- The pump-piston 7 in the pump-cylinderis IO tuated by the movement of the motor-piston rigidly connected witha motor-piston 8 in the and a secondary valve surrounding theprimotor-cylinder by a rod 9, that is suitably mary valve, that isactuated by the pressure packed where it passes through the parts of 60of the water accordingto the position of the the pump-valve case whichform the ends of primary valve for directing the iiow of water thepump-cylinder and the motor-cylinder.

to the motor-piston. The suction-valve 10 on one side and the dis- Theobject of this invention is to 'provide a charge-valve 11 on the otherside are arranged simple, durable, powerful, and compact conin thepump-valve case so that they may be 65 struction having the primaryvalve, the secremoved at any time by unscrewing the plugs ondary valve,and the water ports and pas- 12, which support the valve-stems.

2O sages so arranged with relation to each other Themotor-cylinder-valve-head hasabonnet that the primary valve has a longmovement, 13 at the top and a bonnet 14 at the bottom, whereby thesecondary Valve, which has a that extends into the motor-cylinder. 7Oshort movement, may have a long time in The inlet 15 opens through oneside of the which to reverse, thus allowing the motorhead and is incommunication with the annupiston to take a full stroke without dangerlar chamber 16. The outlet 17 opens through that it will strike the endof the cylinder and the other side of the head and is in communiinsuringa uniform and smooth action of the cation with two annular chambers 18.Be- 75 parts. tween the inlet-chamber 16 and the outlet- The machineshown as embodying the inchambers 18 are intermediate annularchamvention has a pump -cylinder containing a bers 19 and 20.

pump -piston, a valve -case containing pump In-the head and extendingfrom one bonnet suction and discharge valves, a superimposed to theother, so as to line the annular inlet, 8O motor-cylinder containingamotor-piston that outlet, and intermediate chambers, is a tube isrigidly connected with the pump-piston, 21. Perforations are madethrough the linand a head at the 'upper end of the motoring-tubeopposite the inlet-chamber, the outcylinder provided with the necessarywater let-chambers, and the intermediate chambers. ports and passagesand containing a freely- The secondary valve, that is movable in the 8 5movable tubular secondary valve in the cenhead, has a tubular body 22,with four cupter of which is a double-piston primary valve shapedpackings that fit the lining-tube. The

that has a rod which is arranged to be engaged upper and lower packings23 face outwardly,`

with and moved by the motor-piston. and they two intermediate packings24. face in- Figure 1 of the accompanying drawings wardly. The openingthrough the body is 90 shows a vertical section of this machine. Fig.closed at the ends by caps 25. 2 shows a sectional view of the cylindersand Between the two upper packings is an anvalve-head on a plane atright angles to the nular space 26, which is in communication p plane ofFig. 1. Fig. 3 shows asectional View, with the annular chamber 27, thatis connecton larger scale, of thcvalve-head and the pried by a passage28 with the upper end 'of the 95 mary and secondary valves. opening inthe body. Between the two lower packings is an annular space 29, whichis in communication with an annular chamber 30, that by a passage 31 isconnected with the lower end of the opening in the body. The annularspace 32-between the intermediate packing's is in communication with theopening in the body at the middle.

The annular' chamber 20 is connected by a passage 33 with the upper endof the opening' in the motor-cylinder, and the annular space 19 isconnected by a passage 34 with the upper end of a tube 35, which is heldbetween the head and the valve-case and communicates with the lower endof the opening in the motor-cylinder, Fig. 2. Perforations 36 are madethrough the body from the interior to the eX- terior between the middleand the upper end, and perforations 37 are made through the body fromthe interior to the exterior between the middle and the lower end.

Movable in the central opening in the body is the primary valve, whichhas oppositelyfacing cup-packing's 38, which are held separated by asleeve 39 upon a rod 40, that eX- tends through the lower bonnet, andhas ahead 41 in an opening' in the i'od that connects the motor-pistonand the pump-piston, Fig. 1.

When the secondary valve is in its lowest position, water under pressureenters the annular space 32 between the intermediate packings and passesthrough the chamber 2O and passage 33 to the upper end of the motor-cyl--inder and forces the motor-piston downwardly.

The water-pressure is exerted equally in opposite directions upon theintermediate packings of the secondary valve and also enters the openingin the center of the body and is eX- erted equally in oppositedirections between the packings of the primary valve. l/Vhen thesecondary valve is in its lowest position, water under pressure, thatenters the opening' in the center of the body, passes through the upperperforations 36 and holds the secondary valve down. Vhen themotor-piston is going' downwardly, the lower part of the motor-cylinderexhausts through the tube 35 and passage 34 to the annular chamber 19,which is in communication with the outlet through the space 26 andchamber 18. At all times the annular spaces 26 and 29 are incommunication with the annular outlet-chambers 18, allowing water toexhaust from above and below the packings of the primary valve. As themotor-piston nears the lower limit or' its nievement it engages the headof the primary-valve rod and draws down the primary valve. When theprimary valve has been di'awn way down, thc upper packing 38 is cari'iedbelow .the upper perforations 36 and the lower packing 38 is cari'iedbelow the lower perforations 37, so that the water in the head above thesecondary valve is allowed to escape through the upper perfor-ations 36,passage 28, and space 26 to the outlet, while the water under pressurebetween the packings of the primary valve passes through the lowerperforations 37 and lifts the secondary valve. When the secondary valvehas reached the upward limit of its movement, the space 32 is incommunication with the chamber l9-that is, in communication with thelower end of the motor-cylinder-so that pressure will be exertedupwardly on the motor-piston. At this time the water undei' pressureabove the motor-piston escapes through the passage 33 and space 29 tothe outlet. The space 32 between the intermediate packings of thesecondary valve is always in communication with the inlet-passage, andthe spaces 26 and 29 are always in communication with theoutlet-chambers 18. /Vhen the motor-piston nears the upward limit of itsmovement, the primary-valve rod is engaged and moved upwardly, so thatthe space below the secondary valve is opened to the outlet and thespace above the secondary valve is opened to the inlet, causing thesecondary valve to change and the pressure on the motor-piston to bereversed.

The cup-packings of the primary valve are placed a considerable distanceapart, so that the primary valve will have a long slow movement eachside of the upper and lower perforations 36 and 37, and theseperforations of course must be such a distance apart that they openfrom-the interior tothe secondary valve. This allows the secondary valveto move slowly and uniformly in changing its position before the motorand pump pistons reach the limits or' their movements. A hydraulicmotorpump constructed in this way operates easily and smoothly withoutpounding'. It is sure in action and durable in use, and it does not clogor become choked with sediment.

The invention claimed is l. A hydraulic-motor pump consisting of apump-cylinder containing a pump-piston, a motor-cylinder containing' amotor-piston, a valve-head having an inlet communicating with an annularchamber, an outlet communieating with two annular chambers, intermediatechambers between the inlet-chamber and the outlet-chambers, a perforatedtube lining' the chambers, bonnets attached to the ends of the head, atubular secondary valve loosely litting the lining-tube and having twoinwardlyfacing cup-packings near the center and two outwardly-facingcup-packings near the ends, a middle annular space that is always incommunication with the inlet and two outer annular spaces that ai'ealways in communication with the outlet, passages connecting the outerannular spaces with the ends of the opening' in the valve-body,perforations connecting the opening in the valve-body with the middleannular space, pcrforations connecting thc opening in the valve-bodywith the chambers in the lining-tube beyond the outer cup-packings, capsclosing the ends of the opening in the valve-body, a primary valvemovable in the opening' and having two cup-packings fac- IOO IIO

ing each other' at considerable distance apart and a rod extending' fromthe primary valve into a position to be engaged with and moved by themotor-piston, substantially as speciiied. 2. A hydraulic-motor pumphaving a base with an upwardly-extending ange, a pumpcylinder with itslower end resting upon the base within the ange, a pumpevalve case witha downwardly-extending iiange fitting' the upper end of thepump-cylinder and having an upwal'dly-extending iange, a motor-cylinderwith its lower end resting' upon the pumpvalve case within the flange, avalve-head with a downwardly-extending flange resting upon the top ofthe motor-cylinder, flanges extending' outwardly from the valve-head,bolts extending' from the flanges on the valve-head to the base andholding the base, pump-cylinder, valve-case, motor-cylinder andvalve-head tog'ether, a pump-piston in the pump-cylinder, suction anddischarge valves in the valve-case, a motor-piston in the motor-cylinderand connected with the pump-piston, a tubular secondary valve in thevalve-head, a piston primary valve movable in the secondary valve, and arod connecting the primary valve with the motor-piston, substantially asspecifled.

3. A valve-head having' an inlet communicating' with an annular chamber,an outlet commuuicating with two annular chambers, intermediate chambersbetween the inlet-chamber and the outlet-chambers, aperforated tubelin-` ing' the chambers, bonnets attached to the ends of the head, atubular secondary valve loosely fitting' the lining-tube and having twoinwardly-facing cup-packings near the center and two outwardly-facingcup-packing's near the ends, a middle annular space that is always incommunication with the inlet and two outer annular spaces that arealways in communication with the outlet, passages connecting the outerannular spaces with the ends of the opening in the valve-body,perforations connecting the opening in the valve-body with the middleannular space, perforations connecting the opening in the valve-bodywith the chambers in the lining-tube beyond the outer cup-packings, capsclosing the ends of the opening in the valve-body, a primary valvemovable in the opening and having two cuppackings fac` ing each other atconsiderable distance apart and a rod extending from the primary valve,

substantially as speciiied.

IRA H. SPENCER.

l/Vitnesses:

H. R. WILLIAMS,

ETHEL M. LOWE.

